Consumer demand for meat grown without antibiotics is having a market effect beyond government regulations. WSJ's David Kesmodel reports. Photo: Rachel Mummey for The Wall Street Journal

This transcript has been automatically generated and may not be 100% accurate.

... meat and poultry for E on anti biotics is making waves of the civil market as Fama's increasingly change the way they raise livestock ... Mr has said it has mostly been looking into this and has this very interesting story better thanks obeying now ... thanks for having me ... tell us up and tell us about the anti biotics and why it an awful they have all put into foods ... in the first place ... well I in in the middle of our last century ... and ... animal health researchers discovered that I'm feeding low level of an about Ex regularly to livestock ... help them grow faster ... in this case at that time it was a narrow way and after World War two ... the USO was seeking ways to increase food production ... and that that was ... later approved in the in the nineteen fifties by the FDA for the use of an about Ex is a growth promoter and livestock in it's ... it's continued ever since ... it's good that benefits continue to have a sense but it does have some side effects for humans as well but on positive ... and now you've gone government saying you know maybe they should be as much anti products in the third in the food we feed to animals ... because of the of the negative impact of how some people ... that's right so there's been a growing concern in recent years stock ... among ... the public health leaders ... that the widespread use of an about Ex II in animal agriculture ... it helps ... trigger antibiotic resistant ... bacteria so ... aam microbes there are resistant to stay calm and not ... by an about Ex and ... I a ... that is ... seen by the CDC and other ... government officials as a contributor to their rising epidemic in the United States than about it resistance which ... affects two million Americans the year in ... the eyes ... the unseen is seen as of the crisis among some ... scientists ... from ... now let let's look at some of the of the spending thing is that spending on what state would check into the graphic that consumer spending on chicken rice prevent a and B Buy outtakes and it's gone really up up up over the last five years and that really is something my people of Perth at the time the more expensive to run a if you get a cup of this maybe can be a quite a lot more ... that's right aam is sometimes double the cost of of of of of their net worth of work ... what we've Michael Conventional a ... chicken at the grocery store so ... but increasingly consumers are willing to pay more for these products on ... is this surveys show that American consumers are ... are increasingly aware of the use of ... of antibiotics in livestock industry ... and many of them are concerned about it on and so you see shoppers really kind of voting with their dollars and ... and insisting on on more of this product on store shelves and in restaurants in ... more more ... retailers and restaurant chains are selling out ... of beef pork and chicken and turkey ... on from that from my animals that were raised without in a box of all ... the in in your story which it since last name is lots of ... great de Selin it ... you talk about majority of warm fall as switching to this ... aam and you know the known and unknown antibody raising up of the cold frame and killing all two ... of the store to see the food in the package and he was the latest ... Yeh that's right so aam ... we interviewed the brand in goal and a Kentucky farmer grows chickens for Perdue farms and out ... in two thousand eleven Purdue came to him and said they wanted ... him to start growing chickens without an about Ex off ... and out of the party has of ... has a brand called RBIs Landen a ... they actually will list the farms the farmer's name of the name of a farm on the onthe packaging and so the first time he saw a whole ... chicken at a store in his area that ... had actually had his father's name on it ... I he was yet he was overjoyed and he bought a ... it's a good picture but on Facebook ... ok great great stuff great story adds everyone to what's that thank you my much David Kesmodel ...